[PATCH v2 6/6] arm64: renesas: r8a7795: Add L2 cache-controller nodes

Mark Rutland mark.rutland at arm.com
Mon Dec 7 11:03:55 PST 2015


On Mon, Dec 07, 2015 at 06:49:43PM +0000, Sudeep Holla wrote:
> 
> On 07/12/15 18:24, Geert Uytterhoeven wrote:
> >+	L2_CA57: cache-controller at 0 {
> >+		compatible = "cache";
> >+		arm,data-latency = <4 4 1>;
> >+		arm,tag-latency = <3 3 3>;
> 
> Interesting, only PL2xx/3xx cache controller driver reads this from the
> DT and configures the controller. The integrated L2 found in
> A15/A7/A57/A53 needs doesn't make use of these values from the DT.

These properties seem to be from l2cc.txt, which really only corresponds
to PL210/PL220/PL310 (and variants) and isn't as generic as it sounds.

I don't see that these are necessary at all.

Thanks,
Mark.



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